Zobrazeno 1 - 10
of 2 480
pro vyhledávání: '"{Lovis} C."'
Autor:
Cretignier, M., Hara, N. C., Pietrow, A. G. M., Zhao, Y., Yu, H., Dumusque, X., Sozzetti, A., Lovis, C., Aigrain, S.
In our former paper I, we showed on the Sun that different active regions possess unique intensity profiles on the Ca II H & K lines. We now extend the analysis by showing how those properties can be used on real stellar observations, delivering more
Externí odkaz:
http://arxiv.org/abs/2411.00557
Autor:
Restori, N., Blind, N., Kühn, J., Chazelas, B., Lovis, C., Mordasini, C., Shinde, M., Martinez, P., Guyon, O.
The objective of the coronagraphic IFU of RISTRETTO is to enable High Dispersion Coronagraphy of planets at a distance of 2$\lambda$/D from their star, without compromising on transmission. The new idea of a PIAA Nuller (PIAAN) allows contrast down t
Externí odkaz:
http://arxiv.org/abs/2411.00486
Autor:
Hernandez, J. I. Gonzalez, Mascareno, A. Suarez, Silva, A. M., Stefanov, A. K., Faria, J. P., Tabernero, H. M., Sozzetti, A., Rebolo, R., Pepe, F., Santos, N. C., Cristiani, S., Lovis, C., Dumusque, X., Figueira, P., Lillo-Box, J., Nari, N., Benatti, S., Hobson, M. J., Castro-Gonz'alez, A., Allart, R., Passegger, V. M., Osorio, M. -R. Zapatero, Adibekyan, V., Alibert, Y., Prieto, C. Allende, Bouchy, F., Damasso, M., D'Odorico, V., Di Marcantonio, P., Ehrenreich, D., Curto, G. Lo, Santos, R. G'enova, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nunes, N., Palle, E., Sousa, S. G., Udry, S.
Publikováno v:
A&A, 690, A79 (2024)
Barnard's star is a primary target within the ESPRESSO guaranteed time observations (GTO) as it is the second closest neighbour to our Sun after the $\alpha$ Centauri stellar system. We present here a large set of 156 ESPRESSO observations of Barnard
Externí odkaz:
http://arxiv.org/abs/2410.00569
Autor:
Silva, A. R. Costa, Demangeon, O. D. S., Santos, N. C., Ehrenreich, D., Lovis, C., Chakraborty, H., Lendl, M., Pepe, F., Cristiani, S., Rebolo, R., Zapatero-Osorio, M. R., Adibekyan, V., Alibert, Y., Allart, R., Prieto, C. Allende, Silva, T. Azevedo, Borsa, F., Bourrier, V., Cristo, E., Di Marcantonio, P., Esparza-Borges, E., Figueira, P., Hernández, J. I. González, Herrero-Cisneros, E., Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Nunes, N. J., Palle, E., Pelletier, S., Seidel, J. V., Silva, A. M., Sousa, S. G., Sozzetti, A., Steiner, M., Mascareño, A. Suárez, Udry, S.
Publikováno v:
Astronomy & Astrophysics, 689, A8, 15 (2024)
Ultra hot Jupiters (gas giants, Teq>2000 K) are intriguing exoplanets due to their extreme atmospheres. Their torrid daysides can be characterised using ground-based high-resolution emission spectroscopy. We search for signatures of neutral and singl
Externí odkaz:
http://arxiv.org/abs/2409.13519
Autor:
Blind, N., Shinde, M., Dinis, I., Restori, N., Chazelas, B., Fusco, T., Guyon, O., Kuehn, J., Lovis, C., Martinez, P., Motte, M., Sauvage, J. -F., Spang, A.
Publikováno v:
Proceedings Volume 13097, Adaptive Optics Systems IX; 130976U (2024)
RISTRETTO is the evolution of the original idea of coupling the VLT instruments SPHERE and ESPRESSO \cite{lovis_2016a}, aiming at High Dispersion Coronagraphy. RISTRETTO is a visitor instrument that should enable the characterization of the atmospher
Externí odkaz:
http://arxiv.org/abs/2409.08052
Autor:
Bourrier, V., Delisle, J. -B., Lovis, C., Cegla, H. M., Cretignier, M., Allart, R., Moulla, K. Al, Tavella, S., Attia, O., Mounzer, D., Vaulato, V., Steiner, M., Vrignaud, T., Mercier, S., Dumusque, X., Ehrenreich, D., Seidel, J. V., Wyttenbach, A., Dethier, W., Pepe, F.
High-resolution spectrographs open a detailed window onto the atmospheres of stars and planets. As the number of systems observed with different instruments grows, it is crucial to develop a standard in analyzing spectral time series of exoplanet tra
Externí odkaz:
http://arxiv.org/abs/2407.19012
Autor:
Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Prieto, C. Allende, Gómez, J. D. Alvarado, Alves, C. S., Amado, P. J., Amate, M., Andersen, M. I., Antoniucci, S., Artigau, E., Bailet, C., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Berio, P., Biazzo, K., Bigot, L., Bik, A., Birkby, J. L., Blind, N., Boebion, O., Boisse, I., Bolmont, E., Bolton, J. S., Bonaglia, M., Bonfils, X., Bonhomme, L., Borsa, F., Bouret, J. -C., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabona, L., Cabral, A., Calderone, G., Calvo-Ortega, R., Cantalloube, F., Martins, B. L. Canto, Carbonaro, L., Caujolle, Y., Chauvin, G., Chazelas, B., Cheffot, A. -L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cirasuolo, M., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Parro, V. Cunha, Cupani, G., D'Odorico, V., Dadi, K., Leão, I. de Castro, De Cia, A., De Medeiros, J. R., Debras, F., Debus, M., Delorme, A., Demangeon, O., Derie, F., Dessauges-Zavadsky, M., Di Marcantonio, P., Di Stefano, S., Dionies, F., de Souza, A. Domiciano, Doyon, R., Dunn, J., Egner, S., Ehrenreich, D., Faria, J. P., Ferruzzi, D., Feruglio, C., Fisher, M., Fontana, A., Frank, B. S., Fuesslein, C., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Goncalves, R. S., Gonzalez, O. A., Hernández, J. I. González, Gouvret, C., Temich, F. Gracia, Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H. J., Hughes, I., Huke, P., Ivanisenko, Y., Järvinen, A. S., Järvinen, S. P., Kaminski, A., Kern, J., Knoche, J., Kordt, A., Korhonen, H., Korn, A. J., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A. A., Lavail, A., Lavie, B., Lee, D., Lehmitz, M., Li, J., Li, W., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M. J., Madhusudhan, N., Magrini, L., Maiolino, R., Maldonado, J., Malo, L., Man, A. W. S., Marquart, T., Marques, C. M. J., Marques, E. L., Martinez, P., Martins, A., Martins, C. J. A. P., Martins, J. H. C., Maslowski, P., Mason, C. A., Mason, E., McCracken, R. A., Sousa, M. A. F. Melo e, Mergo, P., Micela, G., Milaković, D., Molliere, P., Monteiro, M. A., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Nardetto, N., Neichel, B., Neri, N., Niedzielski, A. T., Niemczura, E., Nisini, B., Nortmann, L., Noterdaeme, P., Nunes, N. J., Oggioni, L., Olchewsky, F., Oliva, E., Onel, H., Origlia, L., Ostlin, G., Ouellette, N. N. -Q., Palle, E., Papaderos, P., Pariani, G., Pasquini, L., Castro, J. Peñate, Pepe, F., Peroux, C., Levasseur, L. Perreault, Perruchot, S., Petit, P., Pfuhl, O., Pino, L., Piqueras, J., Piskunov, N., Pollo, A., Poppenhaeger, K., Porru, M., Puschnig, J., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodriguez-López, C., Roederer, I. U., Romano, D., Roth, M., Rousseau, S., Rowe, J., Saccardi, A., Salvadori, S., Sanna, N., Santos, N. C., Diaz, P. Santos, Sanz-Forcada, J., Sarajlic, M., Sauvage, J. -F., Savio, D., Scaudo, A, Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Simoes, R., Simonnin, A., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Spang, A., Spiga, R., Stempels, E., Stevenson, J. R. Y., Strassmeier, K. G., Mascareño, A. Suárez, Sulich, A., Sun, X., Tanvir, N. R., Tenegi-Sangines, F., Thibault, S., Thompson, S. J., Tisserand, P., Tozzi, A., Turbet, M., Veran, J. -P., Vallee, P., Vanni, I., Varas, R., Vega-Moreno, A., Venn, K. A., Verma, A., Vernet, J., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Osorio, M. R. Zapatero, Zechmeister, M., Zimara, J.
The first generation of ELT instruments includes an optical-infrared high-resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs
Externí odkaz:
http://arxiv.org/abs/2407.14601
Autor:
Egger, J. A., Osborn, H. P., Kubyshkina, D., Mordasini, C., Alibert, Y., Günther, M. N., Lendl, M., Brandeker, A., Heitzmann, A., Leleu, A., Damasso, M., Bonfanti, A., Wilson, T. G., Sousa, S. G., Haldemann, J., Delrez, L., Hooton, M. J., Zingales, T., Luque, R., Alonso, R., Asquier, J., Bárczy, T., Navascues, D. Barrado, Barros, S. C. C., Baumjohann, W., Benz, W., Billot, N., Borsato, L., Broeg, C., Buder, M., Castro-González, A., Cameron, A. Collier, Correia, A. C. M., Cortes, D., Csizmadia, Sz., Cubillos, P. E., Davies, M. B., Deleuil, M., Deline, A., Demangeon, O. D. S., Demory, B. -O., Derekas, A., Edwards, B., Ehrenreich, D., Erikson, A., Fortier, A., Fossati, L., Fridlund, M., Gandolfi, D., Gazeas, K., Gillon, M., Güdel, M., Helling, Ch., Isaak, K. G., Kiss, L. L., Korth, J., Lam, K. W. F., Laskar, J., Lavie, B., Etangs, A. Lecavelier des, Lovis, C., Luntzer, A., Magrin, D., Maxted, P. F. L., Merín, B., Munari, M., Nascimbeni, V., Olofsson, G., Ottensamer, R., Pagano, I., Pallé, E., Peter, G., Piazza, D., Piotto, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Rodrigues, J., Santos, N. C., Scandariato, G., Ségransan, D., Simon, A. E., Smith, A. M. S., Stalport, M., Sulis, S., Szabó, Gy. M., Udry, S., Van Grootel, V., Venturini, J., Villaver, E., Walton, N. A.
Publikováno v:
A&A 688, A223 (2024)
Multiplanetary systems spanning the radius valley are ideal testing grounds for exploring the proposed explanations for the observed bimodality in the radius distribution of close-in exoplanets. One such system is HIP 29442 (TOI-469), an evolved K0V
Externí odkaz:
http://arxiv.org/abs/2406.18653
Autor:
Hobson, M. J., Bouchy, F., Lavie, B., Lovis, C., Adibekyan, V., Prieto, C. Allende, Alibert, Y., Barros, S. C. C., Castro-González, A., Cristiani, S., D'Odorico, V., Damasso, M., Di Marcantonio, P., Dumusque, X., Ehrenreich, D., Figueira, P., Santos, R. Génova, Hernández, J. I. González, Lillo-Box, J., Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nunes, N. J., Palle, E., Pepe, F., Rebolo, R., Rodrigues, J., Santos, N., Sousa, S. G., Sozzetti, A., Mascareño, A. Suárez, Tabernero, H. M., Udry, S., Osorio, M. -R. Zapatero, Armstrong, D. J., Ciardi, D. R., Collins, K. A., Collins, K. I., Everett, M., Gandolfi, D., Howell, S. B., Jenkins, J. M., Kielkopf, J., Livingston, J. H., Lund, M. B., Mireles, I., Ricker, G. R., Schwarz, R. P., Seager, S., Tan, T. -G., Ting, E. B., Winn, J. N.
Publikováno v:
A&A 688, A216 (2024)
Since 2018, the ESPRESSO spectrograph at the VLT has been hunting for planets in the Southern skies via the RV method. One of its goals is to follow up candidate planets from transit surveys such as the TESS mission, particularly small planets. We an
Externí odkaz:
http://arxiv.org/abs/2406.06278
Autor:
Krenn, A. F., Kubyshkina, D., Fossati, L., Egger, J. A., Bonfanti, A., Deline, A., Ehrenreich, D., Beck, M., Benz, W., Cabrera, J., Wilson, T. G., Leleu, A., Sousa, S. G., Adibekyan, V., Correira, A. C. M., Alibert, Y., Delrez, L., Lendl, M., Patel, J. A., Venturini, J., Alonso, R., Anglada, G., Asquier, J., Bárczy, T., Navascues, D. Barrado, Barros, S. C. C., Baumjohann, W., Beck, T., Billot, N., Bonfils, X., Borsato, L., Brandeker, A., Broeg, C., Charnoz, S., Cameron, A. Collier, Csizmadia, Sz., Cubillos, P. E., Davies, M. B., Deleuil, M., Demangeon, O. D. S., Demory, B. -O., Erikson, A., Fortier, A., Fridlund, M., Gandolfi, D., Gillon, M., Güdel, M., Günther, M. N., Hasiba, J., Heitzmann, A., Helling, C., Hoyer, S., Isaak, K. G., Kiss, L. L., Lam, K. W. F., Laskar, J., Etangs, A. Lecavelier des, Lovis, C., Magrin, D., Maxted, P. F. L., Mordasini, C., Nascimbeni, V., Olofsson, G., Ottensamer, R., Pagano, I., Pallé, E., Peter, G., Piotto, G., Pollacco, D., Queloz, D., Ragazzoni, R., Rando, N., Rauer, H., Ribas, I., Rieder, M., Santos, N. C., Scandariato, G., Ségransan, D., Simon, A. E., Smith, A. M. S., Stalport, M., Steller, M., Szabó, Gy. M., Thomas, N., Udry, S., Ulmer, B., Van Grootel, V., Villaver, E., Viotto, V., Walton, N. A., Zingales, T.
The TOI-421 planetary system contains two sub-Neptune-type planets and is a prime target to study the formation and evolution of planets and their atmospheres. The inner planet is especially interesting as the existence of a hydrogen-dominated atmosp
Externí odkaz:
http://arxiv.org/abs/2404.11074